Here are some contests I found:

• The Fifth Underhanded C Contest – the scope is to write benign looking code which would pass trough a code-review (and/or there is plausible deniability for the coder), but which does some evil things. Found it via slashdot. Some of the previous solutions are ...

After missing the announcement for the second part of the Network Forensics Puzzle (yes, I’m subscribed the feed now!) I would like to regain your trust by bringing two other contests to your attention:

• Miracle on Thirty-Hack Street from ethicalhacker.net
• the sevenfour challenges (a “keygen-me” type of challenge ...

Here are a couple of challenges I found on the interwebs:

• SSHliders – from ethicalhacker.net. This one is centered around *nix shell scripting and more advanced topics like pipes.
• Hugi Size Coding Compo #29 (from Hugi) – not much time left there, the deadline is the 28th of October. No flashy ...

Well, new for me at least…

The first one is 0x41414141.com. Just go to the site and you can start directly. As far as I know, this is not time-bound.

The second one is spargecoduasta.com (“break this code”). It is put up by BitDefender and I don’t ...

Some time ago I mentioned the Network Forensics Puzzle. The contest is now over and since I didn’t win, I’ll publish my submission below – it was after all correct, but not quite what the judges were looking for (congratulation to the winner).

After validating that the MD5 sum ...

As I usually do, I’ll publish my entry for the Ethical Hacker challenge after the deadline passed:

Challenge Question 1: What is the most probable reason Michael could not get network connectivity from the desk Ethernet jack?  What actions should the team take to determine exactly what is going ...

Sorry for being a little late: the T2’09 challenge just started. Via the F-Secure weblog. Don’t be fooled by the fact that page already contains two entries (“Mr. Speed” and “Mr. Style”) in the top. From what I understand, these are to signal that two winners will be ...